import Vue from 'vue'
import store from './store';
Vue.mixin({
    beforeRouteLeave: function(to, from, next) {
        if (this.$route.meta.keepAlive === true) {
            const result = this.$route.meta.keepAlive === true && store.state.tags.tagList.some(ele => {
                return ele.value === this.$route.fullPath;
            })
            if (this.$vnode && !result) {
                if (this.$vnode.parent && this.$vnode.parent.componentInstance && this.$vnode.parent.componentInstance.cache) {
                    if (this.$vnode.componentOptions) {
                        var key = this.$vnode.key == null ?
                            this.$vnode.componentOptions.Ctor.cid + (this.$vnode.componentOptions.tag ? `::${this.$vnode.componentOptions.tag}` : '') :
                            this.$vnode.key;
                        var cache = this.$vnode.parent.componentInstance.cache;
                        var keys = this.$vnode.parent.componentInstance.keys;
                        if (cache[key]) {
                            if (keys.length) {
                                var index = keys.indexOf(key);
                                if (index > -1) {
                                    keys.splice(index, 1);
                                }
                            }
                            delete cache[key];
                        }
                    }
                }
            }
        }

        next();
    },
});